QJWE543L Fatigue Tensile Testing Machine by Qingji
| Brand | Qingji |
|---|---|
| Origin | Shanghai, China |
| Model | QJWE543L |
| Maximum Test Load | 200 kN |
| Frequency Range | 0.01–1000 Hz |
| Actuator Stroke | ±200 mm (customizable) |
| Load Accuracy | ±1% (2–100% FS) |
| Dynamic Load Ripple | ≤2% |
| Displacement Accuracy | ±0.5% |
| Closed-Loop Control Bandwidth | 10 kHz |
| Waveform Options | Sine, Square, Triangle, Trapezoidal, Sawtooth, Half-Sine, Half-Triangle, Random, User-Defined, and External Input |
| Control Modes | Force, Displacement, and Strain (smooth mode switching) |
| Machine Weight | 850 kg |
Overview
The QJWE543L Fatigue Tensile Testing Machine is a high-performance electro-hydraulic servo-controlled dynamic testing system engineered for precision fatigue, cyclic loading, and static mechanical characterization of metallic alloys, composites, polymers, welded joints, and structural components. Operating on the principle of closed-loop hydraulic actuation with real-time digital feedback, the system delivers controlled sinusoidal or arbitrary waveforms across a broad frequency spectrum—from quasi-static (0.01 Hz) to high-frequency resonance conditions (up to 1000 Hz). Its robust architecture supports both uniaxial tension-compression and pull-pull fatigue configurations, enabling rigorous evaluation of material endurance limits, crack initiation thresholds, and progressive damage evolution under service-relevant loading spectra.
Key Features
- High-capacity electro-hydraulic servo actuation delivering up to 200 kN peak dynamic load with force linearity maintained across 2–100% of full scale (±1% accuracy per ASTM E4 and ISO 7500-1)
- Digital controller with 10 kHz closed-loop update rate, supporting simultaneous multi-channel acquisition and real-time waveform synthesis
- Adjustable stroke range of ±200 mm (standard), with optional extended travel configurations for large-scale specimens or component-level testing
- Multi-mode control architecture enabling seamless transitions between force-, displacement-, and strain-controlled loops—critical for simulating complex service histories including load history effects and dwell periods
- Comprehensive waveform library compliant with ASTM E606, E466, and ISO 1099 standards, including user-defined and externally triggered signal inputs for road-load simulation or spectral fatigue analysis
- Integrated safety interlocks, overload protection, and emergency stop circuitry meeting CE machinery directive (2006/42/EC) and ISO 13857 requirements
Sample Compatibility & Compliance
The QJWE543L accommodates standardized test specimens (e.g., ASTM E8/E21 dog-bone, ISO 6892-1 flat coupons) as well as non-standard geometries—including bolted assemblies, turbine blades, orthopedic implants, and automotive subcomponents—via customizable fixturing interfaces. All mechanical and control subsystems are designed to meet international calibration traceability requirements per ISO/IEC 17025. The system supports GLP/GMP-aligned data integrity practices through audit-trail-enabled software logging and user-access controls consistent with FDA 21 CFR Part 11 principles. Compliance documentation—including factory calibration certificates, hydraulic system schematics, and CE declaration of conformity—is provided with each delivery.
Software & Data Management
The proprietary Qingji TestSuite™ software provides an intuitive Windows-based interface for test sequence definition, real-time monitoring, post-processing, and report generation. It supports automated S–N curve construction, hysteresis loop analysis, cycle counting (Rainflow algorithm), and statistical life prediction (Weibull or lognormal distribution fitting). Raw data is stored in open-format binary files (with ASCII export options), ensuring long-term archival compatibility and third-party integration (MATLAB, Python, LabVIEW). Software validation packages—including IQ/OQ documentation, electronic signature workflows, and version-controlled change logs—are available upon request for regulated environments.
Applications
- High-cycle fatigue (HCF) and low-cycle fatigue (LCF) testing of aerospace alloys (Ti-6Al-4V, Inconel 718) per AMS 2304 and NADCAP AC7101
- Vibration-induced fatigue assessment of automotive suspension components and powertrain mounts
- Biomedical device validation—including fatigue resistance of spinal rods, stents, and dental implant abutments per ISO 14801 and ASTM F1800
- Structural durability evaluation of wind turbine blade root joints and composite laminates under variable-amplitude loading
- Research-grade investigation of microstructure–fatigue property relationships using in-situ imaging-compatible load frames
FAQ
What standards does the QJWE543L comply with for fatigue testing?
It conforms to core mechanical testing standards including ASTM E4, E8, E606, E466, ISO 7500-1, ISO 6892-1, and ISO 1099. Full compliance documentation is supplied with calibration records and traceable reference standards.
Can the system perform thermomechanical fatigue (TMF) tests?
Yes—when integrated with optional environmental chambers (−70°C to +1000°C) and thermal controllers, the platform supports out-of-phase and in-phase TMF protocols per ASTM E2368.
Is remote operation and monitoring supported?
The system includes Ethernet-based communication (TCP/IP) and supports secure remote access via VPN-configured client terminals for supervised off-site operation and diagnostic review.
What maintenance intervals are recommended for hydraulic components?
Hydraulic oil and filter replacement is advised every 2,000 operating hours or annually—whichever occurs first—per ISO 4406 cleanliness code requirements. Preventive maintenance kits and OEM-certified service contracts are available.
Does the controller support third-party sensor integration?
Yes—the digital I/O module accepts analog inputs from extensometers, strain gauges, thermocouples, and acoustic emission sensors, all synchronized at the 10 kHz control rate with timestamped metadata.
